New GNS 530 getting very hot - Is this normal ?

We just had a complete refit of our Piper Archers avionic stack and
collected it from the avionic installers.
We had a two hour flight back to our base and the new equipment performed
very well.
The only issue, is that the 530 got really hot and I wondered what
experience others have the GNS530 ?
I have asked the installers if this is normal.

So does your GNS530 get really hot ?

Thanks for all input,

--
Roy
Piper Archer N5804F

I